ORDER COLEOPTERA. 555 



the lateral edges of the corslet very much arched, and simply 

 narrowed towards the posterior angles. The antennae be- 

 come slightly and gradually more bulky towards the end.* 



Machla, Herbst., 



Have the antennae terminated in a small knob, like a button, 

 and formed by the last three articulations : they can lodge 

 in the cavities which are formed under the sides of the cors- 

 let, which are very thick and rounded. {Platynotus serratus. 

 Fab.) 



ScoTiMus, Kirb., /^/ 



With antennae also terminated in a small knob, but the 

 two last articulations of which are almost confounded, and 

 otherwise unsusceptible of being lodged in particular cavi- 

 ties. The corslet is dilated in front. -j* 



Soraetimes the corslet is almost trapezoid, arched gradually 

 in the whole length of its lateral edges, without any abrupt 

 posterior contraction. The mentum covers the base of the 

 jaws. 



The two last articulations of the antennae are united in a 

 small knob. 



AsiDA, Latr J 



Now we come to blapsides, with oval and but little 

 elongated body, in which the lateral fold of the elytra is 



* Pimelia dentijies, Fab. ; ejnsd. Platynotus reticulatus, pimelia obscura, 

 Oliv. Insects of the Cape of Good Hope. 



\ Scotimus crenicollis, Kirb. Lin. Trans. XII. xxi. 14, a sub-genus 

 proper to the American continent. 



X Latr. Gen. Crust, et Insect. II. p. 155. See the Cat. of the Collect, 

 of Coleopt. of M. le Comte Dejean, p. 65. The platynotus undatus of 

 Fab. is a very different species from the A. grisea. This author is, I be- 

 lieve, mistaken as to its habitat — Platynotus kevigatus, ejusd. 



